/* The host (Linux) side of the Windows GUI cross build: nixpkgs' native Qt 6
 * tools in one prefix, for QT_HOST_PATH.
 *
 * MSYS2's Qt for Windows ships moc.exe, rcc.exe, qmlcachegen.exe and the rest
 * as Windows programs, which a Linux build cannot run; Qt wants the host tools
 * to be the *same version* as the target Qt (6.11.2 here, which is what
 * nixpkgs' Qt 6 is), so they come from nixpkgs rather than from MSYS2.
 *
 * scripts/package_windows_app.sh builds this and points the cross build at it.
 * Not a package: nothing installs it, it is a prefix assembled from the store
 * paths of qtbase/qtdeclarative/qtsvg (bin, libexec, lib/cmake, share/qt6).
 */
with import <nixpkgs> {};

let
  qtPkgs = [
    qt6.qtbase
    qt6.qtbase.dev
    qt6.qtdeclarative
    qt6.qtdeclarative.dev
    qt6.qtsvg
    qt6.qtsvg.dev
  ];
  script = ''
    set -eu
    mkdir -p $out
    for p in ${builtins.concatStringsSep " " (map toString qtPkgs)}; do
      [ -d "$p" ] || continue
      for d in bin lib/cmake libexec share/qt6; do
        if [ -d "$p/$d" ]; then
          mkdir -p "$out/$d"
          cp -rs "$p/$d/." "$out/$d/" 2>/dev/null || true
        fi
      done
    done
  '';
in
runCommand "qt6-host" { } script